Typewriting-machine



J. W: BOND.

TYPEWRETING MACHINE.

APPLICATION FILED AUG.23. 191s.

Patented Jan. 11, 1921.

UNITED STATES PATENT OFFICE."

JOSEPH w. .BOND, OF PHILADELPHIA, rENNsYLvAiIiA, ASSIGNOR T0 UNDERWOOD TYPEWRITERCOMP NY, OF NEW YORK, N. Y., A CORPORATION OF DELAWARE.

TYPEWRITING MAGI-IINE.

Specification of Letters Patent. Patented J 311. 11, 1921.

Application filed'August 23, 1919. Serial No. 319,300.

T 0 all whom it may concern Be it known that I, JosErH W. BOND, a citizen of the United States, residing in Philadelphia, in the county of Philadelphia and State of. Pennsylvania, have invented certain new and useful Improvements in Typewriting-Machines, of which the following is a specification.

This invention relates to typewriting machines, and more especially to such machines as are provided withkey-operated tabulating mechanism.

The keys for operating the tabulating mechanism are often separate from the character keys which make up the typewriter keyboard, and in the Underwood typewriting machine are frequently placed at the very front of the machine, just outside of the front'bar of theframe, and usually a little below the top of said bar.

- When the tabulator keys are located here,

there is some danger that the typists apparel may become entangled with them, especially the sleeve. To prevent this, I

have provided a shield which overlies the tabulating keys. Moreover, the shield, by

covering up the keys, minimizes the number of keys before the eye,'or within the reach ofthe typists fingers, with the result that, when the shield overlies the tabulator keys, there will beeliminated the confusion which an inexperienced typist may have in using a machine with tabulating keys.

The shield may be pivoted to the frame of the typewriter, so that it may be easily swun to and from effective position.

Where the shield is located at the front of the frame in the Underwood typewriting machine, the shield may advantageously take the form of a sheet of metal havingbent-over ends, thelatter adapted to form journals for pivots in ears fast to the frame'of the typewriter. These ears, instead of being'separately fast to the frame, may take the form of the ends of'a light frame which is adapted tobe made fast to the typewriter frame, the ears and the piece joining them being conveniently stamped out of a piece 'of sheet-metal at substantially a single operation. The'shield itself and the cars by which it is journaled on its pivots may likewise be stamped from a single sheet of metal. Thus, it will be seen that my struc- Underwood standard typewriting machine,

showing the present invention as applied thereto.

Fig. 2 is a spread perspective of the shield and the mounting for it.

Fig. 3 is a fragmentar view similar to Fig. 1, but showing the s ield swung down to ineffective position.

Fig. 4 is a fragmentary front view of the parts seen in Fig. 1, the keyboard of character keys being omitted.

In the Underwood typewriting machine, the frame 10 comprises character keys 11, which, when depressed, are adapted to cause types, not shown, to print upon the usual platen, not shown, which is journaled in the usual carriage, not shown. The machine also comprises a space-bar 12, which is adapted to feed the carriage along by letterspace movements. The Underwood typewriting machine also frequently includes decimal tabulator keys 13 on the front ends of key-levers 14, which, when depressed, are

' 1,106,950, dated August 11, 1914.

The tabulator keys 13 usually stand just in front of a front cross-bar 15 forming a .part of the frame 10. The key-levers 14 are pivoted intermediate their ends at a point not shown, with the result that the keys 13 are rather easily vibrated, and, where no comb for holding them is provided, they may be accidentally bent out of position.- To protect the keys'from this bending, as well as from the liability of entanglement described. above, a shield or shutter 16- pivoted upon pivots 17 is adapted to beswung overthe keys 13, so as to little more than clear them, with the result that the upper surface of'the shield, 16forms a continuous or smooth surface not liable to catch in the apparel of the typist, and not liable to confuse the inexperienced typist, as the keys 13 may sometimes do. The

20 and an outwardly-turned lug 21, pro-- vided with screw holes through which screws 22 may be threaded into the front bar The arrangement of screws and lugs thus described forms a mountlng for the pivots 17, which can be made out of very light metal and yet be extremely rigid, owing to the stiffening function of the connecting piece 19. Normally, the shield 16 may be held in the Fig. 1 position in which it covers the tabulator keys 13, and may be detained there by a'detent in the form of a leaf spring 23 stamped out from the metal body of the shield body 16, and adapted to seat itself ina hollow 24; of the right-hand ear 18. The shield 16 may be prevented from swinging too far rearwardly by a stop projection or pin 25, and when swung down to the Fig. 3 positionmay be arrested by a second pin or lug 26, which will hold the swung-down shutter 16 clear of the overhanging tops 27 of the tabulator keys as they descend in operation.

To give the shutter sufficient strength to stand considerable blows, and thus thoroughly protect the tabulator keys, the front edge thereof may comprise a downwardlyprojecting web 28, which serves to stiffen it. The body of the shield 16 is journaled upon the pivot pins 17 by means of cars 29 which are formed as integral bent-over extensions of the metal of which the shield is formed, so that the shield body 16, the spring 23, the web 28 and the cars 29 may be stamped from a single piece of sheetmetal.

Variations may be resorted to within the scope of the invention, and portions of the improvements may be used without others.

Having thus described my invention, I claim: j

1. In a typewriting machine, the combination with a typewriter frame, of character keys in said frame forming a keyboard, a row of tabulator keys, a bar forming part of the typewriter frame betweenthe keyboard and the tabulator keys, and a device mounted on said frame to occupy a position in front of said bar, to provide a continuous surface over said tabulator keys but movable clear of them to enable them to be operated.

2. In a'typewriting machine, the combination with a typewriter frame, of character keys in said frame forming a keyboard toward thefront of the frame, a row of tabulator keys in front of the keyboard, a bar forming part of the typewriter frame between the keyboard and the tabulator keys, and a cover pivoted upon the bar adapted to rest above the tabulator keys to shield them, and adapted to be swung down clear of them to enable them to be operated;

8. In a typewriting machine, the combi nation with a typewriter frame, of character keys in said frame forming a keyboard toward the front of the frame, a row of tabulator keys below and in front of the frame and below the top of the adjacent top of the frame, ears fast to said frame, and a'shield for the tabulator keys pivoted upon said ears and adapted to be swung forward there on to clear the keys to permit them to be operated. 1

4. In a typewriting machine, the. combination with a typewriter frame, of character keys in said frame forming a keyboard toward the front of the frame, a row of tabulator keys having enlarged tops and located adjacent the front of the frame and below its top, a shield for. the tabulator keys,ipivots for said shield fast to said frame, a detent for holding the shield in its upper effective position, and a stop for ar resting the shield clear of the .path of the v depressed tops of the tabulator keys.

5. In a typewriting machine, the combination with a typewriter fra1ne,of character keys in said frame forming a keyboard, a row of tabulator keys, and a shield clear of the character keys and pivoted in said frame, so as to rest above the tabulator keys and cover them, and adaptedto be swung on its pivots clear of them to enable their free operation. v

6. In a typewriting machine, the c0mb1- nation with a typewriter frame, of charac ter keys in said frame forming a keyboard, a row of tabulator keys, a flat sheet-metal shield adapted to overlie said tabulator keys,

1 comprising bent-down ears integral with the shield, and an overhanging web forming one edge of the shield adapted to give it strength, and the whole struck from a single piece of sheet-metal.

7. In a typewriting machine, the combination with a typewriter frame, of character keys in said frame forming a keyboard, a row of tabulator keys, ashield adapted to lie above said tabulator keys, and a support for said shield comprising pivots, ears upon which the pivots are carried, a connecting member connecting the ears, and a bent-over lug on each ear, the whole stamped from a single sheet of metal.

8. In a typewriting machine, the combination with a typewriter frame, of charac ter keys in said frame forming a keyboard,

a row of tabulator keys, a shield adapted to turned-over edge at one edge of the shield forming a strengthening web, fixed ears comprising pivots on which said shield is journaled, a connecting member connecting said fixed ears, and a lug projecting from each fixed ear, said last-named ears, connecting member and lugs adapted to be struck from a single piece of sheet-metal.

9. In a typewriting machine, the combination with a typewriter frame, of character keys in said frame forming a keyboard, a row of tabulator keys in front of said frame, a shield adapted to lie over said tabulator keys and comprising a cover plate and depending ears at the ends of said row of tabulator keys, said ears being provided with journals, fixed ears upon said frame corresponding to thedepending ears of said shield, pivots upon said fixed ears cooperating with the journals in the ears of said shield, an abutment upon one of said fixed ears, and a spring detent upon said shield adapted to cooperate with said abutment to maintain the shield in elevated position.

10.-In a typewriting machine, the combination with a typewriter frame, of character keys in said frame'forming a keyboard, a row of tabulator keys in front of said frame, a shield adapted to lie over said tabu lator keys and comprising a cover plate and depending ears at the ends of said row of tabulating keys, said ears being provided (corresponding to the depending ears with journals,

of said shield, pivots upon said fixed ears cooperatihield, an abutment upon one of said fixed cars, a spring detent upon said shield adapted to cooperate with said abutment to maintain the shield in elevated position, and stops upon said fixed ears cooperating with said depending ears to limit the movement of said shield.

11. In a typewriting machine, the combination with a typewriter frame, of rows of character keys positioned in said frame, a row of tabulator keys, and a shield pivoted with respect to the frame and comprising a plate adapted to lie over the tabulator keys and to cover and uncover said keys, said plate being of a width substantially the same as the tabulator keys and at a height below the level of the next higher row of keys so as not to interfere therewith.

12. In a typewriting machine, the combination with a typewriter frame, of rows of keys positioned in said frame, and a shield pivoted with respect to the frame and adapted to lie over one row of keys to separate said row from the remaining rows.

JOSEPH W. BOND. W'itnesses:

H. G. DRESCHER, CHARLES L. RoMMmL.

fixed ears upon said frame ing with the journals of the ears of said- 

